Practical Metal Aluminum Alloy Four Folding Ruler Builders Drawing Measure Angle Four-Sided Protractors Forms Template Tools Specifications: Material: 02: Aluminum Alloy Size: 31 X 5cm/12.2 X 1.97" Measurement Accuracy: 0.01 Net weight: Aluminum Alloy: 240g Application: Drawing Measuring Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X Four Folding Ruler